Question

According to scientific thought, when does one species of organisms become two species?

A.
when populations become separated from one another

B.
when one population becomes extinct

C.
when one population cannot interbreed with the other population

D.
when populations compete for the same resources

Answer 1

C. when one population cannot interbreed with the other population
Hope i helped you ;P :D

Answer 2

C. When one population cannot interbreed with the other population.